What is the Greatest Common Factor of 945 and 965?

Greatest common factor (GCF) of 945 and 965 is 5.

GCF(945,965) = 5

We will now calculate the prime factors of 945 and 965, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 945 and 965.

How to find the GCF of 945 and 965?

We will first find the prime factorization of 945 and 965. After we will calculate the factors of 945 and 965 and find the biggest common factor number .

Step-1: Prime Factorization of 945

Prime factors of 945 are 3, 5, 7. Prime factorization of 945 in exponential form is:

945 = 3³ × 5¹ × 7¹

Step-2: Prime Factorization of 965

Prime factors of 965 are 5, 193. Prime factorization of 965 in exponential form is:

965 = 5¹ × 193¹

Step-3: Factors of 945

List of positive integer factors of 945 that divides 945 without a remainder.

1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315

Step-4: Factors of 965

List of positive integer factors of 965 that divides 945 without a remainder.

1, 5, 193

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 945 and 965. The biggest common factor number is the GCF number.
So the greatest common factor 945 and 965 is 5.

Also check out the Least Common Multiple of 945 and 965